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One-pot synthesis of MoSe2 hetero-dimensional hybrid self-assembled by nanodots and nanosheets for electrocatalytic hydrogen evolution and photothermal therapy
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  • 分类:O[理学]
  • 作者机构:[1]Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute ot Technology, Beijing 100081, China, [2]Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China, [3]CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, institute of High Energy Physics, Chinese Academy of Sciences, Beijing 700049, China, [4]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 相关基金:This work was financially supported by the National Natural Science Foundation of China (Nos. 21601014, 21471016, and 21271023) and the 111 Project (No. B07012). This work was also financially supported by the Beijing Natural Science Foundation (No. 2162046) and National Basic Research Program of China (No. 2016YFA0201603). The authors would like to thank the Analysis & Testing Center of Beijing Institute of Technology for performing FESEM and TEM measurements.
中文摘要:

我们基于铝硒化物设计了并且准备一个异种维的混血儿(HDH )(MoSe 2) nanodots (ND ) 经由一个一个壶在很少层 MoSe 2 nanosheets (NS )(MoSe 2 HDH ) 抛锚了热水的过程。MoSe 2 HDH 向氢进化反应展出优秀 electrocatalytic 活动(她的) 。这是因为在一方面,在 MoSe 2 NSs/NDs 的接口的 MoSe 2 ND 和唯一的充满缺点的结构的边丰富的特征能为她引进更活跃的地点;在另一方面,在支持的电极的表面上像薄片的 MoSe 2 NS 叠的随机可以完成有效费用运输。另外, MoSe 2 HDH 显示出好水稳定性,理想的 biocompatibility,和高度近红外线(NIR ) photothermal 变换效率。因此, MoSe 2 HDH 为癌症在 NIR photothermal 治疗(PTT ) 作为 nanomedicine 被调查。明确地, MoSe 2 HDH 能为计算断层摄影术(CT ) 和 photoacoustic 断层摄影术(PA ) 作为一根双形式的探针被使用由于它的强壮的 X 光检查变细能力和 NIR 吸收的成像。因此, MoSe 2 HDH,有进一个系统的 CT/PA 成像的联合 PTT,为指导成像的癌症 theranostics 的抓住伟人潜力。这个工作可以提供机灵的策略准备另外的异种维的分层的转变金属 dichalcogenides。

英文摘要:

We designed and prepared a hetero-dimensional hybrid (HDH) based on molybdenum selenide (MoSe2) nanodots (NDs) anchored in few-layer MoSe2 nanosheets (NSs) (MoSe2 HDH) via a one-pot hydrothermal process. The MoSe2 HDH exhibits excellent electrocatalytic activity toward hydrogen evolution reaction (HER). This is because, on the one hand, the edge-abundant features of MoSe2 NDs and the unique defect-rich structure at the interface of MoSe2 NSs/NDs could bring in more active sites for HER; on the other hand, the random stacking of the flake-like MoSe2 NSs on the surface of the supporting electrode may achieve efficient charge transport. Additionally, the MoSe2 HDH shows good water stability, desirable biocompatibility, and high near infrared (NIR) photothermal conversion efficiency. Therefore, the MoSe2 HDH is investigated as a nanomedicine in NIR photothermal therapy (PTT) for cancer. Specifically, the MoSe2 HDH can be applied as a dual-modal probe for computed tomography (CT) and photoacoustic tomography (PA) imaging owing to its strong X-ray attenuation ability and NIR absorption. Therefore, the MoSe2 HDH, combining PTT with CT/PA imaging into one system, holds great potential for imaging-guided cancer theranostics. This work may provide an ingenious strategy to prepare other hetero-dimensional layered transition metal dichalcogenides.

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